BETA Low-Voltage Circuit Protection

Plant safety and operating safety are becoming increasingly important along side the protection of personnel. Shutdowns due to the unexpected tripping of protective devices cause high costs. It is possible however to detect residual currents in the elec-trical installation before the protective device responds.

7 Detect faults in time Residual current monitors (RCM) monitor residual currents in electrical installations and issue a signal when these currents ex-ceed a defined value. Plant operators are thus able to detect and remedy faults be-fore the plant is shut down unexpectedly.

7 Devices for every applicationThe current transformers are available in va-rious sizes, the RCMs can be used optionally for signaling and/or switching.

Highlights

7 Higher plant availability and opera-ting safety through permanent moni-toring of residual currents

7 Adjustable limit values for residual current and response time enable timely detection and signaling – plant shutdowns are often avoidable

7 Additional fire protection can be implemented using the monitoring system

Residual Current Monitors – Residual current monitoring in electrical installations

Answers for infrastructure.

© Siemens AG 2009

Monitoring of Electrical Values2

Monitoring of Electrical Values5SV8 Residual Current Monitors

Overview

Unwanted circuit disconnections can be avoided by timely de-tection and correctly initiated actions. A residual current monitor (RCM) is designed to monitor an electrical installation for resid-ual current and to issue a signal when the residual current ex-ceeds a set value.

RCMs are used primarily in plants where a fault should result in a signal but not in disconnection. Plant operators are thus able to detect faults and eliminate their causes before the protective devices disconnect the installation. As the result, plant safety and operating safety are increased and costs decreased.

The current transformer detects all conductors required to con-duct the current, i.e. also the neutral conductor where applica-ble. In a fault-free system, the magnetizing effects of the conduc-tors through which current is flowing cancel each other out for the current transformer, i.e. the sum of all currents is zero. If a re-sidual current is flowing due to an insulation fault, a residual magnetic field is left in the core of the transformer and produces a voltage. This voltage is evaluated using the electronics of the RCM. The switched contact can be used e.g. to operate an acoustic/optical signaling device, a higher-level control system or a circuit breaker.

Time characteristic of the rated residual current n

Technical specifications

1) INS: Instantaneous, SEL: selective.

100 % I n

I

50 % I

t

n

nR

esid

ual c

urre

nt

Time

Alarm

Disconnection

44061_2I

RCM analog, type A

RCM digital, type A

RCM digital, 4 chan-nels, type A

Standards EN 62020, IEC 62020

Rated operational voltage Ue V AC 230• Frequency Hz 50/60

Rated residual current n A 0.03 ... 5 0.03 ... 30 0.03 ... 30

Response time tv s 0.02 ... 5 0.02 ... 10, INS, SEL1) 0.02 ... 10, INS, SEL1)

Relay contacts 1 × alarm 1 × alarm, 1 × tripping operation

1 × alarm, 1 × tripping operation

• Rated voltage V AC 230 230 230• Rated current A 6 6 6

Current transformer mm 20 ... 210

Test/Reset Yes/Yes

External tripping operation/external reset --/Yes Yes/Yes Yes/Yes

Mounting width MW 2 3 3

Degree of protection• Contacts IP20• Front IP41

Operating temperature °C -10 ... +50

© Siemens AG 2009

Monitoring of Electrical Values 3

Selection and ordering data (Dated 08/2009)

1) Mounting on standard mounting rail with optional holder for standard mounting rail also possible.

* You can order this quantity or a multiple thereof.

Rated opera-tional voltage

Rated residual current

Response time Mounting width

DT Order No. PU PS*/P. unit

PG Weightper PUapprox.Ue In tv

V AC A s TE Unit(s) Unit(s) kg

RCM analog, type A

230, 50/60 Hz 0.03 ... 5 0.02 ... 5 2 B 5SV8 000-6KK 1 1 027 0.163

RCM digital, type A

230, 50/60 Hz 0.03 ... 30 0.02 ... 10, INS, SEL

3 B 5SV8 001-6KK 1 1 027 0.236

RCM digital, 4 channels, type A

230, 50/60 Hz 0.03 ... 30 0.02 ... 10, INS, SEL

3 B 5SV8 200-6KK 1 1 027 0.236

Internal diameter DT Order No. PU PS*/P. unit

PG Weightper PUapprox.

mm Unit(s) Unit(s) kg

Current transformers

Including holder for standard mounting rail 20 B 5SV8 700-0KK 1 1 027 0.07630 B 5SV8 701-0KK 1 1 027 0.095

Including holder for wall mounting1) 35 B 5SV8 702-0KK 1 1 027 0.18170 B 5SV8 703-0KK 1 1 027 0.274105 B 5SV8 704-0KK 1 1 027 0.545

Including holder for wall mounting 140 B 5SV8 705-0KK 1 1 027 1.222210 B 5SV8 706-0KK 1 1 027 2.040

Holders for standard mounting rails B 5SV8 900-1KK 1 2 027 0.004

Suitable for current transformer with internal diameter of 20 mm, 30 mm, 35 mm, 70 mm and 105 mm

© Siemens AG 2009

Monitoring of Electrical Values4

Dimensional drawings

Residual current monitor

RCM analog, 5SV8 000-6KK RCM digital, 5SV8 001-6KK, 5SV8 200-6KK

Current transformer

Current transformer, 5SV8 700-0KK Current transformer, 5SV8 701-0KK

Type Di-men-sion

A B C D E F G

5SV8 702-0KK 100 79 26 49 35 35 43

5SV8 703-0KK 130 110 32 66 70 52 57

5SV8 704-0KK 170 146 38 94 105 72 73

5SV8 705-0KK 230 196 49 123 140 97 98

5SV8 706-0KK 299 284 69 161 210 141 142

Current transformers, 5SV8 702-0KK, 5SV8 703-0KK, 5SV8 704-0KK, 5SV8 705-0KK, 5SV8 706-0KK

I2_1

1602

7

3645 67 85

44686

54 44686

I2_1

6028

45 67 85

I2_116029

Ø46

Ø20

2460

32 I2_16030

Ø59

Ø30

3070

32

I2_16031

ØE

G46

6,5

B

F33A

D

8

C

© Siemens AG 2009

Monitoring of Electrical Values 5

Schematics

Residual current monitor

RCM analog, 5SV8 000-6KK, shunt trip (ST) RCM analog, 5SV8 000-6KK, shunt trip (ST), self-acknowledging

RCM analog, 5SV8 000-6KK, undervoltage release (UR) RCM analog, 5SV8 000-6KK, undervoltage release (UR), self-acknowledging

ST = shunt tripUR = undervoltage release

1S11S2

2S12S2

I202

_160

32a

L1 L2 L3 N

5 6 7 8

L N S1

NO C NC

S2

1 2 3 4

1S1

1S2

ST

1S11S2

2S12S2

I202

_160

34a

L1 L2 L3 N

1S1

1S2

5 6 7 8

1 2 3 4

L N S1

NO C NC

S2

ST

I202

_160

33a

1S11S2

2S12S2

L1 L2 L3 N

1S1

1S2

5 6 7 8

1 2 3 4

L N S1

NO C NC

S2

UR

1S11S2

2S12S2

I202

_160

35a

L1 L2 L3 N

1S1

1S2

5 6 7 8

1 2 3 4

L N S1

NO C NC

S2

UR

© Siemens AG 2009

Monitoring of Electrical Values6

RCM digital, 5SV8 001-6KK, shunt trip (ST) RCM digital, 5SV8 001-6KK, shunt trip (ST), self-acknowledging

RCM digital, 5SV8 001-6KK, undervoltage release (UR)

ST = shunt tripUR = undervoltage release

Reset

C2

Test

S/R 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15

1S11S2

2S12S2

I202

_160

41a

L1 L2 L3 N

1S1

T

1S2

C1

ST

Reset

C2

Test

S/R 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15

1S11S2

2S12S2

I202

_160

42a

L1 L2 L3 N

1S1

T

1S2

C1

ST

Reset

C2

Test

S/R 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15

1S11S2

2S12S2

I202

_160

43a

L1 L2 L3 N

1S1

T

1S2

C1

UR

© Siemens AG 2009

Monitoring of Electrical Values 7

RCM digital, 4 channels, 5SV8 200-6KK, shunt trip (ST) RCM digital, 4 channels, 5SV8 200-6KK

ST = shunt trip S/R = set/reset

T1

I202

_160

36a

L N

T4

L1L2L3N

T3

1S11S

2

1S11S

2

T2

Reset

Test

1S11S

2

1S11S

2

L1L2L3N

L1L2L3N

L1L2L3N

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15

L NC1 C2

C3 C4

C

230 V AC

L N

T1T2T3

1S1

1S2

1S1

1S2

T4

1S1

1S2

1S1

1S2

I202

_160

40a

Reset

Test

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15

S/R

© Siemens AG 2009

The information provided in this brochure contains descriptions or characteristics of performance which in case of actual use do not always apply as described or which may change as a result of further development of the products. An obligation to provide the respective characteristics shall only exist if expressly agreed in the terms of contract. Availability and technical specifications are subject to change without notice.All product designations may be registered trademarks or product names of Siemens AG or supplier companies whose use by third parties for their own purposes may violate the rights of the owner.

More information

Switching positions

RCM digital, type A, 5SV8 001-6KK:

RCM digital, 4 channels, type A, 5SV8 200-6KK:

Alarm Trip Alarm Trip

Setting "Standard" "Standard" "+" "+"

Without power supply

With power supply

Over limit

CT disconnection

456 15

1413 4

56 15

1413

456 15

1413 4

56 15

1413

456 15

1413 4

56 15

1413

456 15

1413 4

56 15

1413

Alarm Trip Trip

Setting "Standard" "Standard" "+"

Without power supply

With power supply

Over limit

CT disconnection

10 1 C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

10 1 C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

10 1 C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

10 1 C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

C1: 14C2: 14C3: 8C4: 8

C1: 13C2: 15C3: 7C4: 9

Siemens AGIndustry SectorBuilding Technologies DivisionElectrical Installation TechnologyPostfach 10 09 5393009 REGENSBURGGERMANY

Subject to change without noticePDF only: (E10003-E38-9T-B2211-7600)PI 0809 En

© Siemens AG 2009

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